意图过滤器可在模拟器上运行，但不能在设备上运行 [英] Intent filter works on emulator but not on device

问题描述

我正在创建一个自定义的意图过滤器，当我点击带有特定文件扩展名的文件(在本例中为.myextension)时，它将打开我的应用程序.意图过滤器位于下面.当前，每次我从模拟器中打开.myextension文件时，此方法均能完美运行.但是，当我从设备上尝试时，它不再起作用.

I'm creating a custom intent filter which will open my app when I tap a file with a certain file extension (.myextension in this case.) The intent-filter is below. This currently works perfectly every time I open a .myextension file from my emulator. However, when I try it from my device, it no longer works.

在设备上，当我在文件浏览器应用程序中点击.myextension文件时，看到的是Unable to preview file.，而不是自动打开该应用程序.我尝试从多个位置(文件应用程序，GDrive，下载文件夹，Slack/Gmail，内部存储和SDCard)打开文件.我在模拟器和设备上都使用了Android 10.

On my device, when I tap a .myextension file in the Files browser app, I see Unable to preview file. instead of automatically opening the app. I've tried opening the file from quite a few locations (Files app, GDrive, Downloads folder, Slack/Gmail, both internal storage and SDCard.) I'm using Android 10 on both my emulator and my device.

<intent-filter android:label="My App">
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.BROWSABLE" />
    <category android:name="android.intent.category.DEFAULT" />
    <data
        android:scheme="content"
        android:mimeType="*/*"
        android:host="*"
        android:pathPattern=".*\\.myextension" />
</intent-filter>

我也尝试过替换该data标签/在此块中添加第二个标签，但这似乎无济于事:

I've also tried replacing that data tag/adding a second tag with this block but it doesn't seem to help:

<data
    android:scheme="file"
    android:mimeType="*/*"
    android:host="*"
    android:pathPattern=".*\\.myextension" />

我缺少明显的东西吗?任何帮助将不胜感激.谢谢！

Am I missing something obvious? Any help would be greatly appreciated. Thanks!

推荐答案

每次我从模拟器中打开.myextension文件时，此功能目前都可以正常使用.

This currently works perfectly every time I open a .myextension file from my emulator.

它在很多时候都会失败，因为它并不是真正与仿真器或设备绑定在一起的.

It will fail much of the time, as it is not really tied to an emulator versus a device.

但是，当我从设备上尝试时，它不再起作用.

However, when I try it from my device, it no longer works.

不需要content Uri具有文件扩展名，就像https URL不需要具有文件扩展名一样.在大多数情况下，content Uri将没有文件扩展名，而这样的Uri将与您的<intent-filter>不匹配.

A content Uri is not required to have a file extension, just as an https URL is not required to have a file extension. Much of the time, a content Uri will not have a file extension, and such a Uri will not match your <intent-filter>.

ACTION_VIEW主要用于具有公认的MIME类型的文件.

ACTION_VIEW is mostly for files with a widely-recognized MIME type.

我也尝试过使用该块替换该数据标签/添加第二个标签，但这似乎无济于事

I've also tried replacing that data tag/adding a second tag with this block but it doesn't seem to help

从Android 7.0开始，

file Uri值通常被禁止.

file Uri values have been generally banned since Android 7.0.

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